Home

Description

n8n is an open source workflow automation platform. In versions 0.121.2 and below, an authenticated attacker may be able to execute malicious code using the n8n service. This could result in full compromise and can impact both self-hosted and n8n Cloud instances. This issue is fixed in version 1.121.3. Administrators can reduce exposure by disabling the Git node and limiting access for untrusted users, but upgrading to the latest version is recommended.

PUBLISHED Reserved 2026-01-05 | Published 2026-01-08 | Updated 2026-01-08 | Assigner GitHub_M




CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-94: Improper Control of Generation of Code ('Code Injection')

CWE-434: Unrestricted Upload of File with Dangerous Type

Product status

< 1.121.3
affected

References

github.com/...io/n8n/security/advisories/GHSA-v364-rw7m-3263

github.com/...ommit/f4b009d00d1f4ba9359b8e8f1c071e3d910a55f6

cve.org (CVE-2026-21877)

nvd.nist.gov (CVE-2026-21877)

Download JSON